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JN

James Norton MRICS

Chartered Surveyor & Registered Valuer

Chartered Surveyor (MRICS) specialising in leasehold enfranchisement valuations, lease extension premiums and RICS deferment rate methodology.

About James

James is a Chartered Surveyor and member of the Royal Institution of Chartered Surveyors (MRICS), specialising in residential leasehold valuation across England and Wales.

He has advised on lease extension and freehold purchase valuations under the Leasehold Reform, Housing and Urban Development Act 1993, applying RICS guidance and the deferment rate framework established in Sportelli v Cadogan [2007].

At LeaseVault, James is responsible for the valuation methodology behind the site's free calculators and reviews all technical content covering premium calculation, marriage value and relativity for accuracy against current RICS practice.

MRICSRICS Registered ValuerLeasehold Enfranchisement Specialist

Articles by James

How to Calculate a Lease Extension PremiumMarriage Value ExplainedRelativity Tables ExplainedThe 80-Year Rule ExplainedHow Much Does a Lease Extension Cost?

Editorial Standards

All content on LeaseVault UK follows our editorial policy. Calculator methodology is documented in full on our methodology page, with citations to GOV.UK, RICS, HM Land Registry and the LEASE Advisory Service.